20 



RIVERS OF MEXICO. 



of Coalcoman, receives the Agamilco, Maruato and Chichucua, 

 and flows into the sea between Cachan and Choc6la. 



7th. Rio de Tolotlan, or Rio Grande de Santiago. This 

 is one of the longest and most important of Mexican rivers, formed 

 by the junction of the Laxa and Lerma, near Salamanca, in 

 the state of Guanajuato, and falls into the Pacific near San Bias 

 after a course of about two hundred leagues. The Rio Bay6na or 

 Canas is an important stream on the coast near the boundary be- 

 tween Jalisco and Sinaloa. 



8th. The Rio de Culiacan rises in the north of the state of 

 Durango, where it is called Rio Sanzeda, thence it takes its 

 course towards the north-west, receiving some smaller streams, and 

 then passing by the town of Culiacan, falls into the Gulf of Cali- 

 fornia. The Rio de Rosario, Rio de Mazatlan, debouche in 

 the same gulf. The rivers Piastla, Elota, Tavala, Emaya, 

 Mocorito, Sinaloa or Ocroni, Ahome, are small streams on 

 the coast of Sinaloa. 



9th. The Rio del Fuerte has its source in the metalliferous 

 mountains of Batopilas and Uruachi, in the state of Chihuahua, 

 where it is known as the river Batopilas. It takes a westerly 

 course across the state of Sinaloa about 27° north ; — it receives a 

 number of other streams, on the western slope of a range of the 

 Cordilleras, and finally flows into the California Gulf. 



10th. The Rio Mayo is the boundary stream between the states 

 of Sinaloa and Sonora ; at its mouth in the Gulf of California is 

 the small port of Santa Cruz de Mayo, or Guitivis. 



11th. The Rio Hiaqui, or Yaqui, rises on the west slope of the 

 Sierra Madre, near the village Matatiche in the state of Chihuahua, 

 whence its course is west south-west, across the state of Sonora ; 

 it receives the Rio Grande de Bavispe which rises in the state 

 of Chihuahua, and also the Rios Oposura and Chico, and, finally, 

 is lost in the Gulf of California, at about 27° 37' north latitude. 



12th. Rio de Gcjayamas. This river rises at San Jose de Pi- 

 mas, in latitude 28° 26' north, its course is west south-west, 

 and its mouth in the Californian Gulf, at the fine and favorite harbor 

 of San-Jose de Guayamas in latitude 27° 40'. 



13th. The Rio de la Ascension rises at about 31° 40' north 

 and 112° 37' west longitude. On its south-westerly course it re- 

 ceives the tributary waters of the Rio de San Ignacio and falls at 

 about 30° 20' north into the Gulf of California. 



14th. Rio de Colorado. This important stream is formed of 

 the river Rafael in about 40° 15' north, and 110° 50' west longi- 

 tude from Paris, on the western declivity of the Sierra de las Grul- 



